Claude Code tip: before you ship a vibe-coded site, let Opus 5.5 send 𝟱 𝘀𝘂𝗯𝗮𝗴𝗲𝗻𝘁𝘀 through 𝘁𝗵𝗲𝘀𝗲 𝟮𝟬 𝗰𝗵𝗲𝗰𝗸𝘀 and fix everything in one pass: 1. design that holds together • write a DESIGN file first and tie every color, font size, spacing and radius to it •